Variable-speed power-transmission device.



PATENTED APR; 28, 1908.

D M. BEARING.-

D POWER TRANSMISSION DEVIGE.

n LI

VARIABLE SPE APPLICATION FILED FEB. 15, 1906. RENEWED APR. 1, 1907'.

w a; m a D 5 w a WM @f 1 mm m 5 a 4 m W 0 .45 working-surfaces 7', 8and"9"u on'a driven.

OFFICE ,DAVIbM. BEARING, or,moiisdivfiiromeau.

YABIABLE-SPEED rowna-rnansmssion DEvIc'E;

-:-1.i 1' r I T all whom it may concern: @:Be known that I,-DAv11')' M;DEARING, a --c1t1zen of the United States, residing at Jackson, in thecounty of .Jacksonand State-bf Michigan, have invented certain newand-useful Improvements in Variable- -Speed 'Power-Transmission Devices;and I do declare the following to be a full, clear, =and=exactdescription of the invention, such 8,S: 1Vill enable others'skilledin-the, art to wh ch it app'ertains to. make and use the gam s fI j :1 p

My inventionfrelates to improvements in 'variablegspeed power.transmission devices for-use on motorvehicles and other machin- Theobject of the invention is to provide a simple, light," durable andefficient device of this ohar'acten'by means of which power eitherdirection at a speed which may be va ried' as des'ired; i

, r With the above and other objects in View, the invention consists ofcertain novel features of construction,"combination and arran ement ofpartsaswill be hereinafter descri ed and claimed.

. In the accompanying drawings:F-igure 1 is-a bottom plan view of myimproved variable speed power transmission -gearing adapted for use onan'automobile or motor '-veh1cle; and Figs. '2 and 3 .are' ve'rticalsec-.tjional views taken respectively on the lanes 'indi'catedbythe lines 22and 3-3 in ig. 1. Referring to the drawin s by numeral, 1 and. 2 denote,respective y, ,driving and driven shafts, which are disposed in planesat right angles. to each other, and journaled in suitable stationarybearings. driving shaft 1 is" a driving member 3,

mounted-to rotate, with said shaft, but

; adaptedto slide longitl'ldinally thereon. member 3 has'three workingsurfaces 14, 5 'and' 6 which coact with complementary 1 member lO,whichjlat teris sli ably mounted up'on' -but a a ted .it'o ro'tate withthe .driv'en'shaft '2.

being beveled and the coacting surfaces 4, -7 The working surface 7 ofthe memb r-101s disposed in aplane at right Specification LettersPatent.

opposite end ofthe body 12.

may -be. transmitted from a driving to a periphery of the member 3.'ment of the member 10 may be effected by any suitable mechanism, but asshown, "I employ a lever 17, which has its forked or Upon the i Iecoafctingworking surfaces 6 9fof1said' members 3, "10 are toothed orinthe form ofb'eveledgears', while theremaining working surfacesare"'smoothj or friction surfaces, the "coacting surfaccs 5, 8'

Patented 4pm 28, 1908.

:,r Application filed February 15, 1906, 'Serial No. 301,282.Renewednprill, 1907. Serial No. 365,856.

angles to the-axis of the shaft 2 and is formed by-the .flat inner faceof the disk 11 located adjacent to oneend of the body 12 of the member10 and opposed to the beveled gear 9 and the friction cone 8, whichsurfaces 8, 9 are disposedadjacent to the The latter is in the form of ahub or sleeve which is keyed, as shown at l3," to rotate with'the shaft2, but. is free to slide longitudinally thereon, to permit either'thefrictlon disk or surface 7 or one of the working surfaces 8,

9 to engage with its complementary working surface upon thedriving-member 3. The driven member 10 is forced'longitudinally in onedirectionupon'the'shaft 2, by means of a coiled spring 14, so thateither the beveled-gears 6, 9 or the friction cones 5,8 are normallyengaged with each other. This spring 14 surrounds the shaft 2 within thelarge friction cone 8 and ,is confined be-- tween the adjacent end ofthe body 12 and an adjustable stop bollar 15. The latterslides uponthe'shaft 2"and may be adjustably secured vthereon by a set screw orthelike -16,'-'so that the tension of the spring v.1 1

against the member 10 maybe varied, as

desired. The driven: Iii-ember .10is moved in the oppdsite directionupon the shaft 2 against the tension of the springl i to disengage theworking surfaces 6, 9 and 5, 8, and cause the inner frictions'urface 7of the disk 11 toeng'a ge the'fiat friction surface 4 on the This move-The end 21 is free to rotate in the cap 20, but.

is adapted toflmove longitudinally therewith by providing an annular rowof bearingballs'23 in coacting annular grooves or "race- .ways'24 25formed respectively in said end 21- and said cap.20,as' clearly shown inFig.8.

' The working surfaces4,;5, ,6 of the member "2 re carried 'by a'ninheri sleeve or tube 26,

which slides freelyj uponthe shaft 1,";fbut is keyed to ro'tatetherew fShow!!! Said sleeve 26 is formed at its inner end with jecting flangeorcoller 29 having in'its outer face a concentric groove orraceway 36, Thescrew threads 28 areengaged with similar in external screw threads 28anda radially pro-.

ternal screwthreads formed in the hilb'iil of l surfaces are thusengaged, the speed of the the beveled gear 6, which latter confinesbetween its rear face and the inner face of the flange 29, the beveledsurfaceor-cone 5, the

peripheral friction surface 4 and an intermelate washer, clearly shown1n l*1 .4 ol the drawings. The inner sleeve 26 extends through anouterslceve 33, which latter is provided in its inner face with anannulargroove 37, between \Vllltlllzlltt-El and the simila r groove 30in the flangeZSl, is provided a row of bearing balls 38. The outer endof the sleeve 33 is externally screw-threaded, as at '39, to receive acap or collar 40, mto Much the 'outer end of the inner sleeve 26projects. This end of the sleeve 26 is formed with an annular groove 41,between which and a similar groove 42 inside of thecap 40 are confinedbearing balls 43. The cap 40 is provided upon its outer face, atdiametrically opposite points, with pivot studs 44, which project intoapertures in the bifurcated end 45 of a lever 46.. Lt will be seen thatby 0 crating the lever46, the sleeve 33 and hence t e member 3 may bemoved longitudinally, so that its friction surfaces 4, 5 may be shiftedtoward and from the centers of their coacting surfaces 7 8 to vary thespeed of'the driven shaft 2. If desired,-an annular brake-band surface46 may be formed or provided upon the outer or large end of'the frictioncone 8 to receive a brake-band or shoe of any descri tion.

T e operation and advantages of the invention will be readily seen. Whenthe parts are in their normal positions as shown in Fig. 1 of thedrawings and the drivingshaft 1 is rotated, the cone 5 will engage theouter or larger portion of the cone 8 and rotate the shaft 2 at a slowspeed. When it is desired to increase the speed, the lever 46 is shiftedto move the member 3 toward theshaft 2, so that the cone 5 will rideinwardly upon the' cone'8 and force the member 10 longitudinally on theshaft 2 against the tension oft-he s ring 14. As the cone 5 movesinwardly, t e speed of the shaft 2 will be gradually increased until thebeveled gears 6 and 9 mesh with each other. The shaft 2 will thus bepositively driven at a high speed and there Will be no shock or jar whenthe gears are moved into and out of meshwith each'other,

owing to the fact that the members have the same speed. When it isdesired to reversethe direction of movement of the driven shaft 2, thelever 17 is shifted to disengage the cause t e friction surface 7 of thefriction dis jk" workin surfaces 5'and 8'or .6 and 9, and to to bemovedinto engagement withthe peripheral friction surface4 When thelatter rearward rotation vol' the shaft may be varied as des1red, bvshift mg the lever 46, as will be readily understood;

While I have described the shaft 1 as the driving shaft, it will beunderstood that it may be the driven shaft.

llaving thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1 i 1. A transmission gearing, including adriving shaft, a driven shafti arrangedat substantially right angles to"t'lliil driving shaft; a beveled frictional wheel l1av; ngabevelpinionfixed to the driven shaft. and a beveled friction wheelhaving a bevel pinion fixed to the driving shaft adapted to successivelyengage with the wheeland pinion carried by 'the drivenshaft.

2. In a device of the character described. a member having peripheral,beveled and toothed working surfaces, a second member having beveled andtoothed working surfaces to coact with the corresponding surfaces on thefirst mentioned member and a flat working surface opposed to its beveledand toothed faces for coaction with the pcripheral surface of the firstmentioned member, and means for varying the relative positions of saidmembers for the pnrpos'e set forth.

3. In a device'ofthe character described.

a member having peripheral, beveled'mnl toothed working surfaces, asecond menrher having beveled and toothed working surfaces to coactwi'ththe correspondingfisurfaces on the first *mentioned member and a flatworking surface opposed ,to its beveled and toothed facesfor coactionwithfthe pie--- ripheral surface of the first mentioned member, meansfor holding the complementary working surfaces of saidmembers normally.in engagement "with each =other, and means for. varying -the'relativepositions .of said members, substantially as described and for thepurpose set forth..

4. Inadevice ofthe character described,

amember having peripherahbeveled and toothed working surfaces, a secondmember,

shifting the spring actuated member against the tension of its actuatingspring, and means for shifting the other member toward and from thespring, actuated I-fiember, substan tiallyas describedlchairactendescrihedgg a driving membe-i'haying;peripherahbawglgdsealer-- and toothed workingsurfaces, a driven member-having beveled andtoothed surfaces to coast with the corresponding surfaces on betweensaid stop and said driven member,

substantially as described and for the purpose set forth.

6. In a device of the character described, right angularly disposeddriving and driven shafts, a sleeve shdably but non-rotatably mountedupon said driving shaft, adriving member upon said sleeve consisting ofa toothed beveled gear, a friction cone and a peripheral frictionsurface, a hub or sleeve slidably but non-rotatably mounted upon saiddriven shaft and consisting of a sleeve having a right angularlydisposed friction disk adjacent to one end and a beveled toothed gearand friction cone adjacent to its opposite end, and means for holdingcomplementary or coactin working surfaces of saidmembers norma ly inengagement w1th each other. 7

7. In .a device'of the character described,

right angularly disposed driving and driven shafts, a sleeve slidablybut non-rotatably mounted upon said driving shaft, a driving -mernberupon said sleeve consisting of a toothed beveled gear, a friction cone,and a peripheral friction surface, a hub or sleeve slidably butnon-rotatably mounted upon said driven shaft and consisting of a sleevehaving a right angularly disposed friction disk adjacent to one end anda beveled toothed gear and friction cone adjacent to its opposite end, aspring upon said driven shaft for holding said members normally inengagement with each other, a lever for shifting said driving memberupon its shaft, and a lever for shifting said driven member upon itsshaft, substantially as described.

In testimonywhereof Ihave hereunto set my hand in presence of twosubscribing witnesses.

DAV ID MT. BEARING. Witnesses: I

FRANK EGGLESTON, CHRISTIE O. STEARNS.

